Bluetooth: SAP: Add SAP profile support in Settings APP

- Handles 16 digit Authentication
- Added Handles SAP profile connection status changes
- Added SAP Disconnect from server related changes

Change-Id: I655a8c8bcdcc275c5d95c8ddd3d7bac2691fa818
(cherry picked from commit d17f03934b2582637f9d059fccccaabbc4203994)
(cherry picked from commit 26fd639eaeacb7dc5d82c9ef9cf5b5eb5fc70b4f)
(cherry picked from commit c63c73ebf900091b67a951e004573c03ea53e01a)